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@media(min-width:1100px){.intro h1 br{display:none}}
@media(max-width:1000px){.lesson-grid{grid-template-columns:minmax(0,1fr) 290px;gap:24px}.exercise{padding:24px}.chapters{grid-template-columns:1fr}.feedback{gap:40px}footer{margin:0 48px}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

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